Instantaneous water-heater.



R. C. FRAMPTON. 4INSTATANLOUS.'WATER HEATER.

APPLICATION FILED NOV. 6, I907.

Patented Oct. 25, 1910.

2 SHEETS-SHEET 1.

musi? unirsi) STATES 'PATENT OFFICE.

YOLDS C. FRAMPTON, 0F ALVLEGHENY,'PENNSYLVANIA, ASSIYGNOR TO PITTSBURG WATER HEATER COMPANY, 0F ALLEGHENY, PENNSYLVANIA, A CORPORATION OF' NEW JERSEY.

INSTANTANEOUS WATER-HEATEBi Specication of Letters Patent.

Patent-ed Oct. 2 5, 1910.

T o all whom 'it may concern:

Be it linown th-at I, RnrNoLDs C. Fiuiiiirrois, a citizen of the United States, residing vat Allegheny', in the county lof Allegheny and State of Pennsylvania, have invented certain new' and useful Improvements in Instantaneous later-Heil' Ts, of which the following is a'speeification.

-V The invention relates to water" heaters employing coil tubes, and has for itsprimary ob]e cts; the provision of an improved` a'rrangement of tubes wherebya more coniplete combustion of fuel is secured, and the absorption ofheat from the top to tliebottoni' of the heater rendered more uniform, to

the end that av higher efficiency be attained;

the provision of improved 'means whereby that part of the boiler subject 4'to thev most severe-usage .may be easily replaced; andthe provision of improved means for maintaining a constant circulation of'hot water through the pipes supplied from'the boiler.

Certain embodiments of the invention are:

in the accompanying drawings,

illustrated wherein .Figure 1 is a 'transverse sectionthrough i tliecasing of one type of'heater, the heating coil or boiler being shown in side elevav tion.

Figure 2 isa similar section 'through a somewhat different type of heater, and

Figure 3 is a detail 'plan view .of the -cou- I plin vused inl device of Figurel.

T ie forni of boiler illustrated in Figure 1 is of the type shown in ReineckevXo. Sftlt',

Referring.

issued' September 2l, 190?, 'briefly to thegeneral construction -asshown in this figure, l is the casing of the heater,"l greater proportion ofthe work ofheating 2, 3 and ei are the coil formations constituting the boiler, 5 is the inlet pipe, .(5 is the outlet pipe, 7 is the thermostat, 8 is the pip`e\ leading from the lower portion of the boiler to the thermostat, t) is a connection .between the thermostat` and thepipe 5, which' connection is provided with a cli-eck valve, 1()` aril `thc burners, 11. is a detachable coupling or connection between the coils@ and 4. 12 is a return pipe troni the pipes supplied circulation pipe the usual 'out-let faucetsaie applied, one only of which', 1.2", is shown, and 13 is' a check 'alve for preveiiting'a backward flow of water tothe right in the Athe tee at the lower end of the connection l1. This general arrangement is partially shown in. Patent No. 866,966, and the present invention consists particularly in Athe arrangement of the coils constituting the formations 2, 3 and t', and the use of the parts l1 and l2. The novelty of the coil con-v struction consists in thei'varying of the spaeing 4between the coils in different 'parts-of the length of the-boiler. It .will be noted that the spaces between the coils of the formation i are greater than those between the coils of the formation i9),l and these spaces between the coils ofthe formation 3 lare in turn greater than those between the' coils of4 the` formation 2. The objects .achieved by this arrangement area more complete combustion-of the fuel employed, vand this. at a .positionlower in the casing 'than has heretofore been'the case, and fur-- ther, a more uniform' distribution of the work of heating the water in the boiler.` 'It will be seen'that the arrangement provides for smaller body of water at'the lower portion of the boiler, which condition reL -sults in a smaller reduction in the heatof the flame than has heretofore-been the case, so that the combustion is more complete. Frointhis it follows', that the coinplete'combastion of the gases occursi atV a .point lower than that-'in boilers'` in which the spacing of the coils was uniform from 'top ,to bottom. It willwalso` beNseen that the upper formations 2.and 3 because of their greater.

heating surface than the coil 4', perform a the wateiwthan has' been the case, with the oldV type. of boilers wherein the lower coil ,performed a very large percentage of the "work of the boiler. This latter result is forinity .of absorption of heat Vthroughout 'iiig that the arrangement secures a uni- .I

the boiler because 'ofthe greater heating surface at the upper portions' o f the boiler,

the longer distance through which Lthe water 1.10.

-1lI`i-g1ref2',v the onlydifferencebeingtliat the".

,arrangement `o'frgthe-therniostatjand certain votherof the operating parts is somewhat dii-5:5

in' .the greater nneWllflQh 'auch upper coils. The return of the Water th-roughthe pipe 12 to thefbottom of vthe vboiler g1ves a very ittakes the gases. to pasa positive and. eecti-ve circulation to they Wate'r..in"ft heV pipes, constituting the system' which thei boiler supplies, as the. Water" is 'returned to-the hottest coil of tlie boileran'd 'throughthia coillleven When-thejoutl'et 6 thereV is Constant upward circulation A 'is closed -in the manner fullydescribed in Patent .No. 866,966 referred to.l The-.ad-

' vantage of .the arrangement Will. also be l' .more .a parent When itis lrecollected that .gwlient 'egburners are running lovv or 'only 'utlet 6 is cllosed,osubstantial1y all of eat i s' "absorbedgby the coil 4 5 so that irculation'through thiS" coil ofthe return 'ater from the vpipe l2 is all that'is necesai'y -to'f-givefita properuniountof heat.

also adds .materially to the safety'of the' Water 'has to pass, materially increases the rapidity .of clrculzlti'on. The .ai-rai'igement 'heater when water not being drawn-'from the syste'iii, 'as the -hottestnvuter is given a posit-1re .and vlgorous circulation through thefsysteni. The placing of the coupling 11 ongthe outside of the boiler removes the -4 .if i connections vfrom 'the .fire and makes theconnectmganddisconnecting of the coils und Ll easy when 1t 1s desired to replace the f coilfl; which coil 4 receives the most severe usage-and" may need replacement before-the coiled? and 3 Worn to any' g`ieat extent. The principle ofl construction as'shownti'n Figure 1 '1s also present vinf-the -,c 1 ev1 ce of ferent.. The conetruction ie one. that is'well known in the vart, and it is .unnecezscvaryto ,goin'to detail, other than to 'state vthat lthe. part: 1 4 isan .internal thermostat, 'to which following "rrangedfin ce "decneaeiig roi'n thetop.'

increases frenithe-:bottoni to the top, QO-is tween-the coilglS and-19, 21

and Q Zis ai check valve.

de o ribed "nfiy'invention Y. and

e, what' Tcl'aim as'ne'w and. 'cure by Letters VPatent. is. thediameter throughout.'

below the outletof. suchjsection f -In testimony whereof signed my name in Subscribed v'vitnesses..

upper colsjpaaaes,*end ibeemiieof:the y-. QflA'col tube boiler comprising api,

rality of setsbf coils arranged 011e .ab0Y1 .the other and having the spacesbetween the coils of ,the sets decreasing from the bottom to the" top oi the heater, the tubingv of vthe boiler bein of substantially unifi rm -diamjeter'tliroug out. A l "if-:gi I

' 3.. A coil tube boiler comprising a, plu-n70. rality of doubleheli'co volute formations arranged one'above the other and having the 'spaces-between the coils of the lovver formation greater lthan .those between. the Acoils of the upper-formations, the tubing of the. boiler being of substantiallyuniforni f4. The combination. in a c oil tube boiler havinga plurality ofv sets of coils one .be-

neath the fothervin serie's5 the lower'one of 80 which discharges from its 'upper'end7 otra coupling between the lower end of tlie'loWer set and the lower end of the Set'a'boye, a re# turn circulation pipe'connected `to the couv pling, an inletl pipe connectedto the upper '35 end of the upperset; a'ndfmeans for preventing aback flow through such ret-urn' .circulation'pipe. 'f'. fj

5-. .The combinationiin a'coil tube boil'er -having a pluralityof aets'of coils. one 'above 90 the other, ofxa detachable coupling between the .two lower'sets "of-coils; a return circulationv pipe connecte'dto '.Sueh';coupling'and provided vWitlifa check v'vlaQlifeF-to prevent a back-.flowv through thereturn pipe, an inlet pipe connected to the upper 'portion` ofjthe upper set for .supplying cold WaterA thereto,

and an outlet pipe vleading .from the1;botto1n Set. l r 6. The combination in a coil.; having fa plurality of 'sets 'of colS,jtlieflowerl one of Whichfdischar-ges'froin itslupper end,

of a .coupling between the lowen endof the lower coil and the 10W-er end '-'.`the. coil above and exterior to the boilerv casing, an inlet pipe for-supplying coldwa'tertoupper portion of the upper setfan outlet pipe lead-. 4 ing from the bottom set,and a 'return circulation pipe: oonnected'to the-coupling,

'7. In co1nbinati`on,' a coil tube heater-hav-I 110 ing upper andlower sections,'an..inlet tothe uppersection, a connection fromthe lower end of the upper section to the lower end of i .tlie loiver` se'ction,. an outlet .from the upper end Aof 'the .lower section, vandareturn cncuf 115 lation 'pi-pe connected to the lvloire); Section I lia'v'e hereunto l the 'presence .or the two VVitnes'ses J. G. BRADLEL' DOERING BELLiNoER.

boiler -109 .i 

